Multi-layer ceramic capacitor having improved component capacity and production method thereof

Abstract

A multi-layer ceramic capacitor comprises dielectric sheets including a first external electrode, a first internal electrode joined to the first external electrode via an interposed dielectric portion, a second external electrode joined to the first internal electrode, and a second internal electrode joined to the first internal electrode. A method of producing a multi-layer ceramic capacitor comprises forming dielectric sheets including a first internal electrode having protrusions and joined to the first external electrode, a second external electrode joined to the first internal electrode, and a second internal electrode joined to the first internal electrode with dielectrics are printed on a cross section of the dielectric sheet, stacking the dielectric sheets to be symmetrical, so that the first external electrodes and the second external electrodes are connected and the protrusions of the first internal electrodes and the second internal electrodes are connected, and compressing, cutting the dielectric sheets, and sintering the cut dielectric sheets.

1. A method of producing a multi-layer ceramic capacitor comprising:
 (a) forming dielectric sheets, wherein a first external electrode, a first internal electrode comprising one or more protrusions and joined to the first external electrode, a second external electrode joined as a single body to the first internal electrode, and a second internal electrode joined to the first internal electrode with dielectrics positioned in spaces defined by the protrusions are printed on a cross section of the dielectric sheet; 
 (b) stacking alternately the dielectric sheets to be symmetrical, so that the first external electrodes and the second external electrodes are electrically connected and the protrusions of the first internal electrodes and the second internal electrodes are electrically connected, and compressing; 
 (c) cutting the stacked dielectric sheets; and 
 (d) sintering the cut dielectric sheets. 
 
     
     
       2. The method of  claim 1 , wherein the shape of the second internal electrode is any one of a triangle, rectangle, or a hemisphere. 
     
     
       3. The method of  claim 1 , wherein the first external electrode, the dielectric, the first internal electrode, the second external electrode, and the second internal electrode are printed simultaneously by an inkjet technique. 
     
     
       4. The method of  claim 3 , wherein the inkjet technique is a technique of using a plurality of inkjet printer heads to spray ink intended for electrodes and ink intended for dielectrics. 
     
     
       5. The method of  claim 1 , wherein the dielectric, protrusions of the first internal electrode, and the second internal electrode are printed continuously on the same plane as the dielectric sheet. 
     
     
       6. The method of  claim 1 , wherein protrusions of the first internal electrode and the second internal electrode are separated by a predetermined gap and printed continually with the dielectric positioned in-between, on the same plane as the dielectric sheet. 
     
     
       7. The method of  claim 6 , wherein protrusions of the first internal electrode and the second internal electrode are separated by a predetermined gap and face each other, between adjacent lines of the first internal electrodes on the same plane as the dielectric sheet.